Shotgun-shell.



W. P. BROWN.

SHOTGUN SHELL.

APPLICATION FILED 111111.24, 1911.

l 1 ,034,684, Patented Aug. 6, 1912.

l 'WM z /HM P BROWN MMM To all "whom it may concern:

constructed, vt-he gas can work its waythe end of the cylinder 3 and binren ysimenswmmm P. isaown, or m PATENT cierren.

IN N EAIOIIS, MINNESOTA.

sHoTeuN-SHELL. 1,034,684.) Specifilctivnof Letters Patent. Patented Alig. 6, 1912.

. Application med, March 24,

Beit known that I, WILLIAM P. BROWN, of Minneapolis, vHennepin county, Minnesota, have invented certain new .and useful Improvements in Shotgun-Shells, of 'which the following-is, a. specification.

The object of my present invention" is 4to prevent the gas from the'burning powder from lling the wall of the shell between it the inner metallic sleeve. or lining. Ordinarily in shot gun shells as usuallyV tween the paper shell andthe inner inder or sleeve and loosen `the paper its seat in the cap. A

y invention consists generally in providing the inner shell or sleeve with one or- Inore annular ribs whichare pressed into the surface of the paper shell and form an eliectual barrier against the passage of gas between the shell and the' sleeve.

In the accompanying drawing forming part of this specication, Figure -1 isa longitudinal, sectional view of a shot gun shell with my invention applied thereto, Fig. 2 is a similarfview showing the coperating ribs formed in the inner and outer sleeve ofthe shell.

In the drawing, 2 represents the cap of the shell or the outer cylinder, into which the end of the cylindrical paper port-ion 8 is inserted. s

4 is a disk, usually of paper, inserted into provided with t-he ordinary fulminat-ing cap socket 5, as usual in shells of this kind.

6 is an inner sleeve fitting snugly within the end of the paper cylinder and having its outer edge bent inwardly to bear on the surface of the disk. The paper cylinder is l outer cylinder 2 and the sleeve 6 andv to prevent the gas between the paper cylinder and the inner 'sleeve I provide annular grooves 7 in t e sleeve forming ribs on its outer surwhich are forced into the paper cyland form close gas-tight joints there-` with, thereby preventing the gas from pass# ing to the rear end of the shell and unsealing the paper cylinder. I have also found that the gas, in working back between the lining and the paper cylinder, will expand e outer cylinder near the head to such an extent that it is almost' impossible to remove from the size ofthe lcylpassage of 1911. Serial. N0 316,765.

ribs in the lining so that annular, non-communicating grooves will be formed in the paper cylinder, I am .able to ei'ectually preventthe passage of the gas between the lining and the cylinder.' These ribs are endless, as indica/ted in the drawing, and the passage of as between the lining and the paper cylin er is made practically impossible. In Fig4 1 I have shown two of these an'nul I ber of them may be provided, according to shell and the requirements for forming a t-igh'ttjoint.

" In Fig. 2 I have' shown .a modification which consists in providing a single groove `in the-inner sleeve and two grooves 8 in the outer sleeve or cylinder 2. The grooves 8 are preferably arranged on each side of the groovein the sleeve sothat the paper cylinder will be gripped and held between them and the passage of gas between the inner cylinder andthe sleeve will thereby be efectually prevented.

I claim as my invention l. A shot gun shell comprising a head and a cylinder or sleeve formed thereon, a paper cylinder having one end fitting within said sleeve and seated against said head, .a breech wad, between which and said sleeve the inner end of said cylinder is gripped, a metallic lining for the inner portion of lsaid cylinder extending between said breech wad and said cylinder, the forward portion of said lining projecti g'beyond said breech wad and inclosing the' powder chamber, said lining having an' internal annular groove forming an external, continuous rib extending around said lining, said rib being embedded in the wall of said cylinder and forming a barrier to the passage of gas between said cylinder and linin 2. A shot gun shell comprislng a head and a cylinder or sleeve formed thereon, a breech wad, a paper cylinder having one end inserted between said sleeve and said breech wad, a metallic lining for the inner portion of. said paper cylinder having its inner end .inserted between said breech wad and said paper cylinder, the outer end of said lining projecting beyond said breech wad and inclosing the powder chamber, said lining having an internal annular groove formed therein forming an external, continuous rib that 1s seat-ed inthe inner sui'- the shell from the gun. By providing the face of said paper cylinder, said rib formfoth-Rassaigo of gas between" In witness whereof, Ivh-afel lierennto 'set g Y said 'lining and papergksylinder and 'saidv mj'hand this 1st dayofMarchlglL sleeve having externq,1j annular\ oovesforming internal ribs'o-" posits sres of WILLIAM BROWN' 4 5 i119 corresponding rib in sai lining and co- Witnesses:

operating' therewlth to grip' said paper cyl- GENEVIEVE E. SomcNsEN,y inder. I x v EDWARD A. PAUL. 

